Fsc part 2 online preparation for chemistry chapter 3 (group IIIA and Group IVA Elements)

Online Short Questions For Chapter 3 "12th Class Chemistry Chapter 3 Short Questions Preparation "

Try The Short Questions For 12th Class Chemistry Chapter 3 Short Questions Preparation

  • Total Questions10

  • Available Sets5

Start Test Download PDF

Chemistry - 12th Class Chemistry Chapter 3 Short Questions Preparation

Question # 1

Discuss use of PbCrO4in paints?

  • Ans 1: It is used as a pigment under the name of chrome yellow.Orange or red basic lead chromates are formed when lead chromate is boiled with dilute alkali and are used as pigments.The stable yellow modification of lead chromate is monoclinic Mixture of lead chromate with lead sulphate or barium sulphate are also used as yellow pigments.
Submit

Prepare Complete Set Wise Questions For Chapter 3 "12th Class Chemistry Chapter 3 Short Questions Preparation "

12th Class Chemistry Chapter 3 Short Questions Preparation - Set 1

Question # 1

Discuss use of PbCrO4in paints?

  • Ans 1: It is used as a pigment under the name of chrome yellow.Orange or red basic lead chromates are formed when lead chromate is boiled with dilute alkali and are used as pigments.The stable yellow modification of lead chromate is monoclinic Mixture of lead chromate with lead sulphate or barium sulphate are also used as yellow pigments.
Submit

12th Class Chemistry Chapter 3 Short Questions Preparation - Set 2

Question # 1

Write any two properties of boron which show peculiar behavior?

  • Ans 1: 1.Boron is only element in Group IIIA which is non metallic in behaviour.
    2.It is the only element with less that four electrons in the outermost shell which is not a metal.
Submit

12th Class Chemistry Chapter 3 Short Questions Preparation - Set 3

Question # 1

What is effect of temperature on semiconductor?

  • Ans 1: The electrical conductivity of semiconductor depends upon their temperautre. When a metal is heated,its resistance increases,when a semiconductor is heated its resistance decreases and vise versa.
Submit

12th Class Chemistry Chapter 3 Short Questions Preparation - Set 4

Question # 1

Give uses of Lead Suboxide?

  • Ans 1: It is back powder,obtained on heating plumbous oxalate in the absence of air.Other than pigments,it is used in the manufacture of lead storage batteries.
Submit

12th Class Chemistry Chapter 3 Short Questions Preparation - Set 5

Question # 1

What is reaction of heat on orthoboricacid,H3BO3?

  • Ans 1: When orthoboric acid is heated strongly,it swells to frothy mass losing water molecules.It is first converted into metaboric acid then to tetra boric acid and finally to boric anhydride.
  • Ans 2: H3BO3----->HBO2+ H2O
    HBO2------->H2B4O7+ H2O
    H2B4O7------>2B2O3+ H2O
Submit

ic-science-white
Chemistry
3rd Chapter

12th Class Chemistry Chapter 3 Preparation

Here you can prepare 12th Class Chemistry Chapter 3 (group IIIA and Group IVA Elements). Click the button for 100% free full practice Preparation.

Start Chapter 3 Preparation

Is this page helpful?